Fisher's new Multi-Sensor has superior leak detection capabilities. In an extremely compact design, Fisher has achieved higher performance, improved audio clarity, improved sensor electronics, and better sensitivity to leaks with less background noise - all with heavy duty characteristics of the trusted Bigfoot. The multi-sensor is use for both the ground microphone and direct contact applications - the one sensor that does it all. Fisher's NEW XLT-30 Multi-Sensor combo sets the new standard for leak detection.